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Erschienen in:
2012 | OriginalPaper | Buchkapitel
5. Assessing the Impact of Climate Change on Evapotranspiration and Soil Salinization
verfasst von : Mohammad Hassan Rahimian, Samaneh Poormohammadi
Erschienen in: Climate Change and the Sustainable Use of Water Resources
Verlag: Springer Berlin Heidelberg
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Abstract
In this study a hypothesis was tested and evaluated: evapotranspiration of vegetation cover in dry saline waterlogged areas has a negative impact on salinization of soil resources due to pumping of saline underground water to the surface. For this purpose, reference, potential and actual evapotranspiration (ET) were simulated over the 2010–2039 time period via integration of Surface Energy Balance Algorithm for Land (SEBAL), MODIS remotely sensed satellite images and General Circulation Model (GCM)-derived data. Results of the study disproved the mentioned hypothesis; ET comparisons between green vegetated surfaces and bare abandoned lands represented the positive role of surface vegetation in alleviation of soil salinity in the studied conditions. This means that acceleration of the salinization rate is probable in a lack of vegetation cover condition, especially when the groundwater is saline-shallow.